Documentation for DT-binding change.
Suggested-by: Boris Brezillon <boris.brezil...@bootlin.com>
Signed-off-by: Piotr Bugalski <p...@cryptera.com>
---
.../devicetree/bindings/spi/spi_atmel-qspi.txt | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/spi_atmel-qspi.txt
diff --git a/Documentation/devicetree/bindings/spi/spi_atmel-qspi.txt
b/Documentation/devicetree/bindings/spi/spi_atmel-qspi.txt
new file mode 100644
index 000000000000..d52b534c9c2b
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi_atmel-qspi.txt
@@ -0,0 +1,41 @@
+* Atmel Quad Serial Peripheral Interface (QSPI)
+
+Required properties:
+- compatible: Should be "atmel,sama5d2-spi-qspi".
+- reg: Should contain the locations and lengths of the base
registers
+ and the mapped memory.
+- reg-names: Should contain the resource reg names:
+ - qspi_base: configuration register address space
+ - qspi_mmap: memory mapped address space
+- interrupts: Should contain the interrupt for the device.
+- clocks: The phandle of the clock needed by the QSPI controller.
+- #address-cells: Should be <1>.
+- #size-cells: Should be <0>.
+
+Example:
+
+qspi1: spi@f0024000 {
+ compatible = "atmel,sama5d2-spi-qspi";
+ reg = <0xf0024000 0x100>, <0xd8000000 0x08000000>;
+ reg-names = "qspi_base", "qspi_mmap";
+ interrupts = <53 IRQ_TYPE_LEVEL_HIGH 7>;
+ clocks = <&qspi1_clk>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_qspi1_default>;
+ status = "okay";
+
+ flash@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "winbond,w25m02gv", "spi-nand";
+ reg = <0>;
+ spi-max-frequency = <83000000>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+
+ ...
+ };
+};
+
--
2.11.0
